Portal 2 Co-Op Screens

Valve has used PAX to release a few images highlighting the co-op mode that will be present in Portal 2.
If you’ve been following announcements about the game, you’ll know that in co-op the playable characters are a modified GLaDOS personality core and modified defence turret. As yet, these chaps are unnamed, so I’m going to opt for calling them Whizzer and Chips.
Look below for robo-empathy images.